Ps101: Chapter 4 Sensation And Perception

Front 1

Psychophysics

Back 1

The relationship between
physical characteristics of stimuli and our perception of those stimuli

Front 2

Sensation

Back 2

Basic, immediate experience elicits in a sensory organ

Front 3

Perception

Back 3

Process of interpreting and organizing sensations

Front 4

Sensory Receptors

Back 4

Special cells unique to each sensory organ

Front 5

Absolute Threshold

Back 5

The smallest, weakest, least intense stimulus that is detected 50% of the time

Front 6

Transduction

Back 6

Process by which physical energy is converted to a neural signal

Front 7

Difference Threshold

Back 7

Smallest change in stimulus that is detected 50% of the time (just noticeable difference)

Front 8

Weber's Law

Back 8

JND increases as the stimulus intensity increases

Front 9

Attention

Back 9

Stimuli does not change but there is a change in response

Front 10

Sensory Adaptation

Back 10

Perception requires stimulus dynamics change, a decrease in the perception of continuous unchanging stimuli.

Front 11

Signal Detection Theory

Back 11

Theory that states our ability to detect sensory stimulus (signal) depends not only on the intensity of the signal but also on variables such as distractions and motivation.

Front 12

Retina: Rods (Peripheral and dimness) and Cones (Color

Back 12

Visual Machinery

Front 13

Retina --> Lateral geniculate thalamus --> primary visual cortex

Back 13

Visual Process

Front 14

Brightness (intensity)
Hue (color)
Saturation (colorfulness)

Back 14

Visual Stimuli Characteristics (Properties of Light)

Front 15

Visual Perception

Back 15

Process by organizing figure and background, and grouping by proximity and similarity

Front 16

Illusions

Back 16

False or inaccurate perceptions. Psychophysical disconnect.